Whitey is still getting slutted out :)
BLACKY:
Your current vehicle's differential drive ratio is 3.64 and it is Limited Slip.
Should take about 6 hours for swap.
Options/prices for diff swap:
Dinan: $2500 + $1800 core 3.91 gear
Diffsonline: $2285 + $1500 core 3.91 or 4.10 gear
Turner Motorsport: $ 2000 + $1000 core 3.91 or 4.10 gear
I think shipping will be in the neighborhood of $150 ish.
3.91 is mild upgrade... the 4.10 is pretty extreme
3.91 should yield 7% torque increase
4.10 10% +
For what you're trying to do.. i would recommend the 4.10 gear.
Core price will be refundable with return of stock diff.
As quoted by Dinan:
The shorter 3.91 gearing takes advantage of torque multiplication for a substantial increase in torque delivered to the road. The improved acceleration comes with only a minor increase in engine speeds at cruise and no effective reduction in top speed potential. The
3.91 ratio was selected in order to enable the car to attain a speed of 60 mph without introducing a second to third gear shift which would otherwise slow down 0-60 mph times.
The Dinan 3.91 Limited Slip Differential delivers what is perhaps the greatest "bang for the buck" in terms of improved and more immediate acceleration from the M3
--
Andre Soto
330.573.1319soto....@gmail.com